Furnace.



No. 771,159. PATENTED SEPI. 27.v 1904.

G. S. KENT.

FURNAGE.

APPLICATION FILED 00T. 7, 1903. No MODEL. 2 SHEETS-SHEET I.

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A 7TOHNE YS PATENTED SEPT. 27, 1904.

G. s. KENT. FURNAGE.

APPLICATION FILED OCT. 7, 1903.

2 SHEETS-SHEET 2.

N0 MODEL.

/N VEN To@ /eazyexfjh/t 8 y muy f A Troma/E ys Wl TNE SSE S UNITED STATES Patented September 27, 1904 GEORGE S. KENT, OF LYNDON, VERMONT.

FURNACE.

SPECIFICATION forming part of Letters Patent No. 771,159, dated September 27, 1904.

Application filed October 7, 1903x T0 all whom it may concern:

Be it known that I, GEORGE S. KENT, a citizen of the United States, and a resident of Lyndon, in the county of Caledonia and State of Vermont, have invented a new and Improved Furnace, of which the following is, a full, clear,

' and exact description.

The purpose of the invention is to provide a furnace of simple, durable, and economic construction capable of utilizing all the products of combustion to a maximum extent, in which furnace a continuous combustion-chamber is provided and two fuel-chambers in communication with the combustion-chamber, together with means for admitting air and steam to the combustion-chamber and for the admission of stoking-tools to the fuel-chambers.

A further purpose of the invention is to provide convenient means for operating the gratebars from the exterior of the furnace.

The invention consists in the novel construction and combination of the several parts, as will be hereinafter fully set forth, and pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a transverse section throughl the furnace, taken practically on the line 1 1 of Fig. 3. Fig. 2 is a front elevation of the furnace. F'ig. 3 is a longitudinal vertical section through the furnace, taken substantially on the line 3 3 of Fig. 1; and Figs. 4 and 5 are detail sectional views illustrating slight modifications in the formation of the combustionchamber for the furnace.

The front wall 10, the back wall 11, and the side walls 13 of the furnace are preferably made of brick, although any other suitable material may be employed, and these walls are provided, preferably, with an outer jacket 14, of metal. At the central portion of the furnace a partition 15 is constructed of fireproof material, and this partition is preferably of pyramidal form, as is illustrated in Figs. 1, 4, and 5. The top portion of the furnace may be constructed in dierent ways, but is provided under all conditions with metal side sections 16, having marginal flanges Seiial No. 176,074. (No model.)

17 extending down over the upper portions of the outer jacket 14, and in these upper side sections 16 openings 18 are produced' a seriesare spaced one from the other a suitable distance, thereby providing what I term E )7 a combustion-chamber B, having an outlet 21 at the rear of the furnace, adapted to be connected wherever desired. In Fig. 4 the combustion-chamber B is shown of different form, as the central portion A of the top is Hat or continuous in the same horizontal plane with the side top sections 16, and in Fig. 5 I

have illustrated another slight deviation in the construction of the combustion-chamberB, wherein instead of a segmental dome A being provided for the top of said chamber the top A2 is of angular or V shape. Otherwise the construction of the top of the furnace is the same as that shown in Fig. 1.

The grate-bars O are in two series, located at each side of the central partition 15, as is shown in Figs. 1 and 3. These grate-bars O of a series are connected at the top by a longitudinal bar 21a and near their bottom ends by a longitudinal bar 22. The bottom ends of the grate-bars are adapted to rest against the inclined surfaces of the central partition 15 when the grate-bars are in closed position, as is shown in Fig. 1, and the upper connecting-bars 21a of the grate-bars have hinged connection 23 with suitable supports 24, located at the upper side portions of the interior of the said furnace, as is also shown best in Fig. 1. Sectors 25 are shown in Fig. 1 as hinged at 27 1 to the lower connecting-bars 22 of the grate-bars C, and, as is illustrated in Fig. 3, these sectors are preferably three in nume ber for each series of grate-bars, one sector being located about centrally between the ends of the series of grate-bars and the other two at or near the ends ofthe series. These sectors 25 are provided with top and bottom teeth 26, adapted to engage with upper and lower pinions 27and28,secured upon upper and lower shafts 29 and 30, mounted to turn in the side walls 13 of the furnace` and where the sectors 25 are located suitable openings 31 are produced in the side walls. Said openings are normally closed by doors 32 of any approved construction, which doors are opened when the grates are to be dumped to enable the sectors 25 to pass outwardly at their outer ends beyond the outer faces of the side walls of the furnace. One of the shafts, preferably the upper shaft 29, is provided with a hand-wheel 33 at the front end of the furnace, as is shown in Fig. 2, whereby to operate the pinions 27 and 28. and in order that. the grate-bars may be held positively in open or in closed position ratchet-wheels 39 are secured on one of the shafts carry-ing the sprocket-wheels 27 and 28, which ratchet-wheels are engaged by suitable pawls 40, as is clearly shown in Fig. 2. Thus it will be observed that when the grate-bars are in th'e closed position (shown in Fig. l) two fuel-chambers D are formed, and these fuel-chambers D have communication with the combustion-chamber B through the spaces between the bars 20, forming the sides of the said combustion-chamber.

More or less air can be admitted to the combustion-chamber B by opening doors 3-1 at the front of the furnace, mounted to slide in suitable guides 35, and attention may be given to the fire in the fuel-chambers D by the use of suitable stolring-tools. At the front of the furnace doors 36 are located, adapted to uncover yopenings leading to the fuel-chambers D, and the said doors arc ordinarily mounted to slide in suitable ways 37, while access is obtained to the two ash-pits through doors 38, also located at the front of the furnace.

In order to facilitate combustion, a steampipe 4l is made to pass through an opening 42 in the front of the furnace; but the noz- Zle end of the said steam-pipe does not extend into the interior of the furnace, so that when the steam enters the combustion-chamber it will have been thoroughly mixed with the admitted air.

In order that the two shafts 29 and 3() shall move together when the hand-wheel 33 is revolved, gears 43 and 44 are preferably located at the rear ends of the shafts, which gears are in mesh one with the other at each` of, pinions carried by said shafts and engaging said sectors, and means on the projecting ends of said shafts for rotating the same` to operate the grate-bars.

2. In a furnace, a central partition, a combustion-chamber supported by the said partition, a fuel-chamber at each side of the combustion chamber, being in communication with the combustion-chamber, grate-bars for the fuel-chambers, pivoted at their upper ends and normally held with their lower ends in engagement with the sides of said partition, and means extending without the furnace for manually carryingI the grate-bars from a closed to an open position and back to a closed position, as described.

3. A furnace provided with a central partition cone-shaped in cross-section, a combustion-chamber supported by the said partition, having fenestrated sides and an outlet, gratebars hinged at each side of the combustionchamber, having a downward inclination from the Lipper portion of the furnace into engagement with the said conical partition, forming fuel-chambers in communication with the combustion-chamber, bars hinged at their inner ends to the lower ends of said grate-bars, and means operatively engaging said bars to swing the grate-bars on their pivots.

4. A furnace provided with a central partition, a combustion-chamber supported by the said partition, having fenestrated sides and an outlet, grate-bars hinged at each side of the combustion-chamber, having a downward inclination from the upper portion of the furnace to the said partition, forming fuel-chambers in communication with the combustionchamber, means for operating the grate-bars, toothed sectors hinged to the lower portions of the grate-bars, shafts journaled in the sides of the furnace, pinions carried by the said shafts, between which the sectors have movement, and means for operating the said shafts from the exterior of thefurnace, as set forth.

5. In a furnace, a central partition, having its side walls converging upwardly, a combustion-cham ber above said partition and having fenestrated sides, a fuel-chamber at each side of the combustion-chamber and in communication therewith, said fenestrated sides of the combustion-chamber forming the inner walls of the fuel-chamber, grate-bars forming the outer walls of the fuel-chamber, said bars being held with their lower ends adapted to swing into engagement with the inclined sides of the partition of the furnace, and means connected with the lower ends of said grate-bars for manually controlling the same.

In testimony whereofI have signed my name to this specification in the presence of two subscribing witnesses.

GEORGE S. KENT. Vitnesses:

J. FRED. ACKER, JNO. M. RITTER.

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